The North Mountain Blade CHOP 4 (2412-RDWH) is a flagship front flipper folding knife, celebrated for helping spark the front flipper trend in Asia — with over 50,000 units sold. It combines traditional Japanese metallurgy with modern minimalist design, resulting in a folding knife that’s both elegant and highly functional.
At its core is a 3.5" Japanese-style tanto blade made from premium SLD-Magic Japanese steel in a three-layer San Mai construction, highlighted by a visible hamon wave pattern. With a hardness of 60–61 HRC, this blade offers outstanding edge retention, strength, and cutting performance for both precision work and everyday carry.
The Red & White Ceramic Carbon Fiber handle sets this variant apart visually, blending vibrant aesthetics with the lightweight durability ceramic carbon fiber is known for. Paired with a front flipper mechanism and ceramic ball bearings, it delivers a snappy, smooth opening that’s both satisfying and practical.
Every detail of the 2412-RDWH reflects a clean, purpose-driven design philosophy, making it a signature piece in the CHOP series.
Key Features
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3.5" Japanese-style tanto blade in SLD San Mai steel with visible hamon
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Front flipper mechanism with ceramic bearings for smooth, fast deployment
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Distinctive Red & White Ceramic Carbon Fiber handle — strong, lightweight, and striking
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60–61 HRC hardness for exceptional edge retention and durability
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Minimalist, highly functional design that emphasizes craftsmanship
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Part of the iconic CHOP 4 flagship line with 50,000+ units sold globally
Specifications
| Feature |
Details |
| Brand |
North Mountain Blade |
| Model Name |
CHOP 4 |
| Model Number |
2412-RDWH |
| Product Type |
Folding Knife |
| Opening Mechanism |
Front Flipper |
| Overall Length |
≈ 8.25 in |
| Blade Length |
3.5 in |
| Blade Material |
SLD-Magic San Mai Japanese Steel |
| Blade Style |
Japanese-Style Tanto |
| Blade Grind |
Flat |
| Blade Finish |
Belt Satin with Hamon |
| Hardness |
60–61 HRC |
| Handle Material |
Red & White Ceramic Carbon Fiber |
| Locking Mechanism |
Liner Lock |
| Pivot Assembly |
Ceramic Ball Bearings |
| Clip Position |
Tip-Up |
| Dexterity |
Ambidextrous |
| Designer |
North Mountain Blade Team |
| Country of Origin |
China |
| Intended Use |
EDC / Collection / Tactical |
Feature Highlights
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3.5" SLD San Mai tanto blade with traditional Japanese forging
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Front flipper deployment for fast, smooth, one-handed operation
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Eye-catching Red & White Ceramic Carbon Fiber handles
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Exceptional edge retention (60–61 HRC) and balanced cutting geometry
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Clean, minimalist profile — no unnecessary ornamentation
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Legendary CHOP 4 series with over 50,000 units sold
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Ideal for collectors, enthusiasts, and refined EDC setups
